JP2012088112A - Spontaneous combustion phenomenon bodily-feeling apparatus - Google Patents

Spontaneous combustion phenomenon bodily-feeling apparatus Download PDF

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JP2012088112A
JP2012088112A JP2010233699A JP2010233699A JP2012088112A JP 2012088112 A JP2012088112 A JP 2012088112A JP 2010233699 A JP2010233699 A JP 2010233699A JP 2010233699 A JP2010233699 A JP 2010233699A JP 2012088112 A JP2012088112 A JP 2012088112A
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heat insulating
insulating member
heat
test part
spontaneous ignition
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Shinobu Maruno
忍 丸野
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a spontaneous combustion phenomenon bodily-feeling apparatus capable of allowing a user to safely bodily-feel a spontaneous combustion phenomenon of a combustible substance to be used in a chemical plant, a food factory or the like.SOLUTION: An apparatus capable of allowing a user to bodily feel a spontaneous combustion phenomenon of a substance causing spontaneous combustion includes: a heat source 12; and a heat insulating material 11 having a heat insulating member 11d arranged so as to cover the heat source 12, and an interception member 11c arranged so as to cover the outer surface of the heat insulating member 11d to intercept the heat insulating member 11d from the outside air. The heat insulating material 11 has a test part 20 for impregnating a liquid of the substance into the heat insulating member 11d. The test part 20 is formed so that when the inner surface 20s of a test part heat insulating member 20d is arranged so as to be stuck close to the heat source 12, the inner surface 20s of the test part heat insulating member 20d is intercepted from the outside air, and when the inner surface 20s of the test part heat insulating member 20d is separated from the heat source 12, the inner surface 20s of the test part heat insulating member 20d is exposed to the outside air.

Description

本発明は、自然発火現象体感装置に関する。さらに詳しくは、化学工場や食品工場等において使用される可燃性物質の自然発火現象を安全に体感させるために使用される自然発火現象体感装置に関する。   The present invention relates to a spontaneous ignition phenomenon sensation apparatus. More specifically, the present invention relates to a spontaneous ignition phenomenon sensation apparatus used to safely experience the spontaneous ignition phenomenon of combustible substances used in chemical factories, food factories, and the like.

化学産業をはじめとする製造業では、種々の可燃性物質を使用していることから、不安全状態による火災、爆発事故の危険性が常に存在している。例えば、高温の可燃性物質は熱媒として使用されており、配管によって搬送されている。   In the manufacturing industry including the chemical industry, various flammable substances are used, so there is always a risk of fire and explosion accidents due to unsafe conditions. For example, a high-temperature combustible substance is used as a heat medium and is conveyed by piping.

かかる高温の可燃性物質を搬送する配管は、搬送中に温度低下が生じることを防ぐためにグラスウール等の断熱材が巻かれているが、配管の劣化によるピンホールの発生や、配管のフランジ部等から可燃性物質がしみ出して、断熱材にしみ込むという現象が発生している。   Pipes that transport such high-temperature combustible materials are wound with heat insulating material such as glass wool to prevent temperature drop during transportation, but pinholes due to pipe deterioration, pipe flanges, etc. There is a phenomenon in which flammable substances ooze out from the inside and soak into the heat insulating material.

配管周囲の空間、つまり、断熱材によって囲まれている空間は配管内を流れる可燃性物質の熱によってある程度の温度に維持されており、しかも、断熱材の周囲には空気が存在する。このため、断熱材にしみ込んだ可燃性物質が、断熱材の周囲に存在する空気と接触すると、自然発火して煙を発生したり温度上昇が生じたりする場合がある。   The space around the pipe, that is, the space surrounded by the heat insulating material is maintained at a certain temperature by the heat of the combustible material flowing in the pipe, and air exists around the heat insulating material. For this reason, when the combustible material soaked in the heat insulating material comes into contact with the air existing around the heat insulating material, it may spontaneously ignite to generate smoke or increase the temperature.

とくに、断熱材にしみ込んだ可燃性物質が高温の状態で大量の空気と接触すると、自然発火による急激な温度上昇が生じて、煙の大量発生や火災が発生する可能性が高くなる。
例えば、配管に巻き付けられている断熱材から煙が発生していることに気付いた作業者が、配管から断熱材を取り外した場合には、可燃性物質が急激に大量の空気に触れるので、煙の大量発生や火災等が発生する可能性は高くなる。
In particular, when a flammable material soaked in a heat insulating material comes into contact with a large amount of air in a high temperature state, a rapid temperature rise due to spontaneous ignition occurs, and there is a high possibility that a large amount of smoke or a fire may occur.
For example, if an operator who notices that smoke is generated from the insulation wrapped around a pipe, removes the insulation from the pipe, the flammable material suddenly touches a large amount of air, so the smoke The possibility of large-scale outbreaks and fires increases.

上記のごとき状況(断熱材からわずかな煙が発生している状況など)を発見したときにおいて、作業者が適切かつ落ち着いた対応を行うためには、現在どのような状況が生じているか、また、引き続いてどのような現象が生じる可能性があるかについて具体的に把握していることが必要となる。
そして、上記のごとき現象やその危険性などを作業者に理解させる上では、断熱材から煙が発生している状況や、その状況から自然発火が生じる状態を、作業者に実際に体感させることが最も重要かつ効果的である。
When the above situation (such as a situation where slight smoke is generated from the heat insulating material) is discovered, what kind of situation is currently occurring in order for the worker to take an appropriate and calm response, and Therefore, it is necessary to specifically understand what kind of phenomenon may occur subsequently.
In order for workers to understand the above phenomena and their dangers, etc., the worker should actually experience the situation where smoke is generated from the heat insulating material and the situation where spontaneous ignition occurs from that situation. Is the most important and effective.

従来、可燃性物質の自然発火性を評価するために使用できる装置は種々開発されているが(例えばSITなど、非特許文献1)、かかる装置は、あくまで可燃性物質がどのような条件において発火する可能性があるかについて調べるためのものに過ぎず、現実のプラント等の設備に模した装置において、自然発火の危険性を疑似体感できる装置は開発されていない。   Conventionally, various devices that can be used for evaluating the pyrophoric properties of flammable substances have been developed (for example, SIT, Non-Patent Document 1). It is only for investigating whether or not there is a possibility of the occurrence, and an apparatus that simulates the risk of spontaneous ignition has not been developed in an apparatus that mimics an actual facility such as a plant.

長谷川和俊著、「危険物の安全」、丸善株式会社、平成16年11月10日、p78−79Kazutoshi Hasegawa, “Safety of Dangerous Goods”, Maruzen Co., Ltd., November 10, 2004, p78-79

本発明は上記事情に鑑み、化学工場や食品工場等において使用される可燃性物質の自然発火現象を安全に体感させることができる自然発火現象体感装置を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a spontaneous ignition phenomenon sensation apparatus that can safely experience the spontaneous ignition phenomenon of combustible substances used in chemical factories, food factories, and the like.

第1発明の自然発火現象体感装置は、自然発火性を有する物質の自然発火現象を体感し得る装置であって、加熱源と、該加熱源を覆うように設けられた断熱部材と、該断熱部材を外気から遮断するように該断熱部材の外面を覆うように設けられた遮断部材と、を有する断熱材と、を備えており、前記断熱材は、前記物質を前記断熱部材に含浸させるための試験部を備えており、該試験部の断熱部材における加熱源側の面が、前記加熱源に対して接近離間可能であって、該試験部の断熱部材における加熱源側の面が前記加熱源に密着するように該試験部を配置させると、該試験部の断熱部材における加熱源側の面が外気から遮断され、該試験部の断熱部材における加熱源側の面を前記加熱源から離間させると、該試験部の断熱部材における加熱源側の面が外気に露出されるように形成されていることを特徴とする。
第2発明の自然発火現象体感装置は、第1発明において、前記加熱源は、筒状に形成された金属製の外筒と、該外筒内に、該外筒に対して熱を供給する加熱手段とを備えていることを特徴とする。
第3発明の自然発火現象体感装置は、第1または第2発明において、前記断熱材の断熱部材は、不燃性の繊維から形成されたものであることを特徴とする。
第4発明の自然発火現象体感装置は、第1、第2または第3発明において、前記試験部内の温度を測定する温度計測手段を備えていることを特徴とする。
A spontaneous ignition phenomenon sensation apparatus according to a first aspect of the invention is an apparatus capable of experiencing a spontaneous ignition phenomenon of a substance having spontaneous ignitability, wherein a heating source, a heat insulating member provided so as to cover the heating source, and the heat insulation And a heat insulating material provided to cover the outer surface of the heat insulating member so as to shield the member from outside air, and the heat insulating material impregnates the heat insulating member with the substance. The surface on the heat source side of the heat insulating member of the test portion can be approached and separated from the heat source, and the surface on the heat source side of the heat insulating member of the test portion is the heating unit. When the test part is arranged so as to be in close contact with the source, the heat source side surface of the heat insulating member of the test part is shielded from the outside air, and the heat source side surface of the heat insulating member of the test part is separated from the heating source. Heating in the heat insulating member of the test section Wherein the surface on the side is formed so as to be exposed to the outside air.
The spontaneous ignition phenomenon sensation apparatus according to a second aspect of the present invention is the apparatus according to the first aspect, wherein the heating source supplies a heat to the outer cylinder in a cylindrical outer cylinder and the outer cylinder. And heating means.
The spontaneous ignition phenomenon sensation apparatus according to a third aspect of the present invention is characterized in that, in the first or second aspect, the heat insulating member of the heat insulating material is formed from a non-combustible fiber.
A spontaneous ignition phenomenon sensation apparatus according to a fourth aspect of the present invention is characterized in that, in the first, second or third aspect of the present invention, the apparatus is provided with temperature measuring means for measuring the temperature in the test section.

第1発明によれば、自然発火性を有する物質を試験部の断熱部材にしみ込ませた状態で、試験部の断熱部材を加熱源に接近させてその断熱部材における加熱源側の面(以下、断熱部材の内面という)を加熱源に密着させれば、断熱部材にしみ込ませた物質を加熱源からの熱によって加熱することができる。すると、物質の温度を、物質が自然発火する温度まで上昇させることができる。その状態から、試験部の断熱部材を加熱源から離間させれば、断熱部材の内面が露出し、物質が急激に大量の空気に触れるので、物質の自然発火現象を急激に進行させることができる。すると、急激な温度上昇や発煙等を生じさせることができるから、作業者に、自然発火現象を体感させることができ、自然発火の危険性も理解させることができる。
第2発明によれば、装置の構造が、実際のプラントの配管に近い状態となるので、体感実験において、作業者に実際のプラントをイメージさせることができる。よって、作業者に、自然発火現象をより身近な現象として体感させることができる。
第3発明によれば、装置の構造が、実際のプラントの配管に近い状態となるので、体感実験において、作業者に実際のプラントをイメージさせることができる。よって、作業者に、自然発火現象をより身近な現象として体感させることができる。しかも、断熱部材は通気性が比較的良い構造となっているので、試験部を加熱源の外面から離間させたときに、試験部に含浸されている物質を空気と容易に接触させることが可能となる。すると、試験部の断熱部材の内面を加熱源に密着させた後、試験部の断熱部材の内面を加熱源から離間させれば、自然発火現象が確実に発生するから、作業者に、自然発火現象を確実に体感させることができる。
第4発明によれば、加熱源に接近させた状態における試験部の温度を把握できる。すると、自然発火が確実に発生する状況(例えば、試験部の物質の急激な温度上昇や発煙等が確実に生じる状況)となったタイミングで、試験部を加熱源から離間させることができる。よって、作業者に、自然発火現象を確実に体感させることができる。
According to the first invention, in a state in which a pyrophoric substance is impregnated in the heat insulating member of the test part, the heat insulating member of the test part is brought close to the heat source and the surface on the heat source side in the heat insulating member (hereinafter, If the inner surface of the heat insulating member is in close contact with the heat source, the substance soaked in the heat insulating member can be heated by the heat from the heat source. Then, the temperature of the substance can be raised to a temperature at which the substance spontaneously ignites. From that state, if the heat insulating member of the test part is separated from the heating source, the inner surface of the heat insulating member is exposed and the substance suddenly touches a large amount of air, so that the spontaneous ignition phenomenon of the substance can be rapidly advanced. . Then, since a rapid temperature rise, smoke generation, and the like can be caused, the worker can experience a spontaneous ignition phenomenon and can understand the danger of spontaneous ignition.
According to the second aspect of the invention, the structure of the device is in a state close to the actual plant piping, so that the operator can image the actual plant in the experience experiment. Therefore, the worker can experience the spontaneous ignition phenomenon as a more familiar phenomenon.
According to the third aspect of the invention, the structure of the device is in a state close to the actual plant piping, so that the operator can image the actual plant in the experience experiment. Therefore, the worker can experience the spontaneous ignition phenomenon as a more familiar phenomenon. In addition, since the heat insulating member has a relatively good air permeability, the substance impregnated in the test part can be easily brought into contact with air when the test part is separated from the outer surface of the heating source. It becomes. Then, after the inner surface of the heat insulating member of the test part is brought into close contact with the heating source, if the inner surface of the heat insulating member of the test part is separated from the heating source, the spontaneous ignition phenomenon occurs surely. The phenomenon can be experienced with certainty.
According to the 4th invention, the temperature of the test part in the state made to approach a heating source can be grasped | ascertained. Then, the test unit can be separated from the heating source at the timing when the spontaneous combustion is surely generated (for example, a situation where a rapid temperature rise or smoke generation of the substance in the test unit is surely generated). Therefore, it is possible for the worker to experience the spontaneous ignition phenomenon with certainty.

本実施形態の自然発火現象体感装置10の概略説明図であり、(A)は概略ブロック図であり、(B)は概略断面図である。It is a schematic explanatory drawing of the spontaneous ignition phenomenon sensation apparatus 10 of this embodiment, (A) is a schematic block diagram, (B) is a schematic sectional drawing. 試験部20を外筒13から離間させた状態の概略拡大説明図であり、(A)は外筒13の軸方向から試験部20を見た図であり、(B)は側方から試験部20を見た図である。It is a schematic enlarged explanatory view of the state in which the test part 20 is separated from the outer cylinder 13, (A) is a view of the test part 20 viewed from the axial direction of the outer cylinder 13, and (B) is the test part from the side. FIG.

つぎに、本発明の実施形態を図面に基づき説明する。
図1において、符号10は本実施形態の自然発火現象体感装置を示している。図1に示すように、本実施形態の自然発火現象体感装置10は、加熱源12と断熱材11とを備えている。
Next, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, the code | symbol 10 has shown the spontaneous combustion phenomenon sensation apparatus of this embodiment. As shown in FIG. 1, the spontaneous ignition phenomenon sensation apparatus 10 according to this embodiment includes a heating source 12 and a heat insulating material 11.

まず、加熱源12は、内部に中空な空間を有する円筒状に形成された外筒13を備えている。
この外筒13は、熱伝導性が高い鉄やステンレスなどの金属素材によって形成されたものである。
なお、この外筒13の素材はとくに限定されないが、熱伝導性が良好であり、後述する自然発火性を有する物質によって腐食されない材料であればよく、とくに限定されない。
First, the heating source 12 includes an outer cylinder 13 formed in a cylindrical shape having a hollow space inside.
The outer cylinder 13 is made of a metal material such as iron or stainless steel having high thermal conductivity.
The material of the outer cylinder 13 is not particularly limited, but may be any material as long as it has good thermal conductivity and is not corroded by a substance having pyrophoric properties described later.

この外筒13の内部には、加熱手段である電気ヒータ14が設けられている。この電気ヒータ14は、外筒13を内側から加熱することができるように配設されている。
例えば、電気ヒータ14としてリボンヒータや面状ヒータを採用した場合には、筒状のヒータ保持部材16の周囲に電気ヒータ14を巻きつけた状態で、リボンヒータが外筒13の内面に接触するように配置すれば、効果的に外筒13を加熱することができる。
An electric heater 14 serving as a heating means is provided inside the outer cylinder 13. The electric heater 14 is disposed so that the outer cylinder 13 can be heated from the inside.
For example, when a ribbon heater or a planar heater is adopted as the electric heater 14, the ribbon heater contacts the inner surface of the outer cylinder 13 with the electric heater 14 wound around the cylindrical heater holding member 16. If it arrange | positions in this way, the outer cylinder 13 can be heated effectively.

なお、リボンヒータをヒータ保持部材16の周囲に巻きつけた加熱手段を採用する場合には、ヒータ保持部材16の表面を断熱材15によって覆い、その上にリボンヒータを巻きつけることが好ましい。かかる構成とすれば、ヒータ14から供給される熱がヒータ保持部材16に逃げることを防ぐことができるので、ヒータ14による外筒13の加熱を効率よく行うことができる。
また、加熱手段は電気ヒータ14に限られず、外筒13を内側から加熱することができるものであればよいが、電気ヒータ14であれば、加熱量の制御が容易であるし安全に実験することができるので、好ましい。
When a heating means in which a ribbon heater is wound around the heater holding member 16 is employed, it is preferable to cover the surface of the heater holding member 16 with a heat insulating material 15 and wind the ribbon heater thereon. With this configuration, it is possible to prevent the heat supplied from the heater 14 from escaping to the heater holding member 16, so that the outer cylinder 13 can be efficiently heated by the heater 14.
Further, the heating means is not limited to the electric heater 14, and any heating means can be used as long as the outer cylinder 13 can be heated from the inside. This is preferable.

図1に示すように、加熱源12の外筒13の周囲には、断熱材11が設けられている。この断熱材11は、断熱部材11dと遮断部材11cとを備えている。
断熱部材11dは、例えば、グラスウールやロックウール等の一般的な断熱性の素材から形成されており、前記加熱源12の外筒13の表面を覆うように設けられている。
この遮断部材11cの周囲には、例えば、アルミシート等のように、通気性がない又は通気性が非常に低い素材によって形成された遮断部材11cが設けられている。この遮断部材11cは、断熱部材11dの外面を覆うように設けられている。
As shown in FIG. 1, a heat insulating material 11 is provided around the outer cylinder 13 of the heating source 12. The heat insulating material 11 includes a heat insulating member 11d and a blocking member 11c.
The heat insulating member 11d is formed of, for example, a general heat insulating material such as glass wool or rock wool, and is provided so as to cover the surface of the outer cylinder 13 of the heating source 12.
Around this blocking member 11c, for example, a blocking member 11c formed of a material having no air permeability or very low air permeability, such as an aluminum sheet, is provided. The blocking member 11c is provided so as to cover the outer surface of the heat insulating member 11d.

以上のごとき構造であるから、断熱材11を加熱源12の外筒13の周囲に取り付けた状態では、断熱材11の断熱部材11dは、外筒13と遮断部材11cとに挟まれて、外部からほぼ気密な状態に保たれるのである。
なお、断熱材11の端面(図1(A)では左右端面)では断熱部材11dが露出しているので、その部分では断熱部材11dは外気と接触する状態となっているが、自然発火現象体感装置10の軸方向の長さを、例えば、200mm以上とすれば、その中央部では断熱部材11dを気密に近い状態とすることができる。
Since the structure is as described above, in the state where the heat insulating material 11 is attached around the outer cylinder 13 of the heating source 12, the heat insulating member 11d of the heat insulating material 11 is sandwiched between the outer cylinder 13 and the blocking member 11c, It is kept almost airtight.
In addition, since the heat insulating member 11d is exposed at the end surface of the heat insulating material 11 (left and right end surfaces in FIG. 1A), the heat insulating member 11d is in contact with the outside air at that portion, but the spontaneous ignition phenomenon is experienced. If the length of the apparatus 10 in the axial direction is, for example, 200 mm or more, the heat insulating member 11d can be made almost airtight at the center.

そして、図1に示すように、断熱材11において、自然発火現象体感装置10の軸方向の中央部に位置する部分には、試験部20が設けられている。
この試験部20は、断熱材11にコの字状の切り込みを設けることによって、略四角形状に形成された部分である。つまり、試験部20は、断熱材11の一部から形成されたものであり、その一端で断熱材11と接続されている。
And as shown in FIG. 1, the test part 20 is provided in the part located in the center part of the axial direction of the spontaneous combustion phenomenon sensation apparatus 10 in the heat insulating material 11. As shown in FIG.
The test portion 20 is a portion formed in a substantially square shape by providing a U-shaped cut in the heat insulating material 11. That is, the test unit 20 is formed from a part of the heat insulating material 11 and is connected to the heat insulating material 11 at one end thereof.

なお、試験部20の部分の遮断部材11cおよび断熱部材11dと、断熱材11の他の部分の遮断部材11cおよび断熱部材11dとを区別するために、以下では、試験部20の部分の遮断部材11cは試験部遮断部材20cで示し、試験部20の部分の断熱部材11dは試験部断熱部材20dで示す。   In order to distinguish between the blocking member 11c and the heat insulating member 11d in the part of the test unit 20 and the blocking member 11c and the heat insulating member 11d in the other part of the heat insulating material 11, the blocking member in the part of the test unit 20 will be described below. 11c is shown by the test part interruption | blocking member 20c, and the heat insulation member 11d of the test part 20 part is shown by the test part heat insulation member 20d.

試験部20が上記のごとき形状であるので、試験部20の一端と対向する他端(つまり、自由端)を持ち上げると、試験部20の試験部断熱部材20dにおける加熱源12の外筒13側の面(以下、単に試験部断熱部材20dの内面20sという)を外筒13の外面から離間させることができ、試験部断熱部材20dの内面20sを露出させることができる。つまり、試験部断熱部材20dの内面20sを外気と接触させることができる(図1(B)、図2)。なお、この状態では、試験部断熱部材20dの内面20sが外筒13の外面から離間したことによって、断熱材11に開口11hが形成される。   Since the test part 20 has a shape as described above, when the other end (that is, the free end) facing one end of the test part 20 is lifted, the outer cylinder 13 side of the heating source 12 in the test part heat insulating member 20d of the test part 20 This surface (hereinafter simply referred to as the inner surface 20s of the test part heat insulating member 20d) can be separated from the outer surface of the outer cylinder 13, and the inner surface 20s of the test part heat insulating member 20d can be exposed. That is, the inner surface 20s of the test section heat insulating member 20d can be brought into contact with the outside air (FIG. 1 (B), FIG. 2). In this state, the opening 11h is formed in the heat insulating material 11 when the inner surface 20s of the test portion heat insulating member 20d is separated from the outer surface of the outer cylinder 13.

逆に、試験部断熱部材20dの内面20sを外筒13の外面から離間させた状態から、開口11hに試験部20が収容されるように試験部20の他端を移動させれば、試験部20によって開口11hを塞ぐことができる。つまり、試験部断熱部材20dの内面20sが外筒13の外面に接近するように試験部20の他端を移動させれば、試験部20によって開口11hを塞ぐことができる。すると、試験部断熱部材20dの内面20sを外筒13の外面に密着させることができるので、試験部断熱部材20dの内面20sをほぼ外気から遮断した状態とすることができるのである。   Conversely, if the other end of the test part 20 is moved so that the test part 20 is accommodated in the opening 11h from the state in which the inner surface 20s of the test part heat insulating member 20d is separated from the outer surface of the outer cylinder 13, the test part 20 can close the opening 11h. That is, if the other end of the test part 20 is moved so that the inner surface 20s of the test part heat insulating member 20d approaches the outer surface of the outer cylinder 13, the opening 11h can be blocked by the test part 20. Then, since the inner surface 20s of the test part heat insulating member 20d can be brought into close contact with the outer surface of the outer cylinder 13, the inner surface 20s of the test part heat insulating member 20d can be substantially cut off from the outside air.

なお、試験部20は、その一端が断熱材11から分離されていてもよい。つまり、試験部20は、断熱材11から完全に分離できるように形成されていてもよい。このような構成とした場合には、自然発火性を有する液体を含浸した試験部20を確実に空気と接触させることができるので、確実に自然発火現象を作業者に見せることができる点で好ましい。   Note that one end of the test unit 20 may be separated from the heat insulating material 11. That is, the test unit 20 may be formed so as to be completely separated from the heat insulating material 11. In such a configuration, the test unit 20 impregnated with a spontaneously ignitable liquid can be reliably brought into contact with air, which is preferable in that the spontaneous ignition phenomenon can be reliably shown to the operator. .

(本実施形態の自然発火現象体感装置10による体感実験)
上記のごとき構成を有するので、本実施形態の自然発火現象体感装置10を使用すれば、以下のように自然発火現象の体感実験を行うことができる。
(Experience experiment with spontaneous ignition phenomenon sensation apparatus 10 of this embodiment)
Since it has the configuration as described above, if the spontaneous ignition phenomenon sensation apparatus 10 according to the present embodiment is used, it is possible to perform an experimental experiment on the spontaneous ignition phenomenon as follows.

まず、試験部20の他端を持ち上げて試験部断熱部材20dの内面20sを露出させて、露出した試験部断熱部材20dの内面20sに、自然発火性を有する液体を含浸させる。そして、試験部断熱部材20dの内面20sが外筒13の外面に密着するように、試験部20を開口11hに収容する。
なお、使用する試料(自然発火性を有する物質)が固体の場合、例えば、ステアリン酸等のように常温で固体の試料の場合には、試料を加熱して融解し液体とした後に、試験部断熱部材20dの内面20sに含浸させてもよい。
First, the other end of the test part 20 is lifted to expose the inner surface 20s of the test part heat insulating member 20d, and the exposed inner surface 20s of the test part heat insulating member 20d is impregnated with a spontaneously ignitable liquid. Then, the test section 20 is accommodated in the opening 11h so that the inner surface 20s of the test section heat insulating member 20d is in close contact with the outer surface of the outer cylinder 13.
When the sample to be used (substance with pyrophoric properties) is solid, for example, in the case of a solid sample at room temperature such as stearic acid, the sample is heated and melted to form a liquid, and then the test section The inner surface 20s of the heat insulating member 20d may be impregnated.

ついで、ヒータ制御手段HCを操作して、ヒータ14を作動させ、ヒータ14の熱によって外筒13を加熱する。外筒13は熱伝導性を有しているから、その外面に密着している試験部断熱部材20dに熱が供給される。
すると、試験部断熱部材20dに含浸されている液体が加熱され、その温度が上昇する。
Next, the heater control means HC is operated to operate the heater 14 and the outer cylinder 13 is heated by the heat of the heater 14. Since the outer cylinder 13 has thermal conductivity, heat is supplied to the test section heat insulating member 20d that is in close contact with the outer surface thereof.
Then, the liquid impregnated in the test section heat insulating member 20d is heated, and the temperature rises.

ヒータ14による加熱を継続した後、試験部20の他端を持ち上げて、再び試験部断熱部材20dの内面20sを露出させると、試験部断熱部材20dに含浸されている液体が急激に大量の空気に触れる。このとき、液体が自然発火し得る温度まで上昇していると、液体が急激に大量の空気に触れたことによって、液体の自然発火現象を急激に進行させることができる。
すると、試験部断熱部材20dの内面20sの内面から発煙を生じるから、この発煙現象を作業者に確認させることができる。よって、作業者に自然発火現象を体感させることができ、自然発火の危険性も理解させることができる。
After the heating by the heater 14 is continued, when the other end of the test part 20 is lifted and the inner surface 20s of the test part heat insulating member 20d is exposed again, the liquid impregnated in the test part heat insulating member 20d is rapidly a large amount of air. Touch. At this time, if the temperature rises to a temperature at which the liquid can spontaneously ignite, the spontaneous ignition phenomenon of the liquid can be rapidly advanced by the liquid suddenly touching a large amount of air.
Then, smoke is generated from the inner surface of the inner surface 20s of the test portion heat insulating member 20d, and this smoke generation phenomenon can be confirmed by the operator. Therefore, the worker can experience the spontaneous ignition phenomenon and can understand the danger of spontaneous ignition.

とくに、断熱部材11d(つまり、試験部断熱部材20d)として、グラスウールなどの不燃性の繊維から形成されたものを使用していれば、装置の構造が、実際のプラントの配管に近い状態となる。すると、体感実験において、作業者に実際のプラントをイメージさせることができるから、自然発火現象をより身近な現象として体感させることができる。
しかも、不燃性の繊維から形成された断熱部材11dは、通気性が比較的良い構造となっている。このため、試験部断熱部材20dの内面20sを露出させたときに、試験部断熱部材20dに含浸されている液体を空気と容易に接触させることが可能となる。よって、自然発火現象をより確実に発生させることができるので、作業者に、自然発火現象をより確実に体感させることができる。
In particular, if the heat insulating member 11d (that is, the test portion heat insulating member 20d) is made of non-combustible fibers such as glass wool, the structure of the apparatus is close to the actual plant piping. . Then, in the sensation experiment, since the worker can imagine the actual plant, the spontaneous ignition phenomenon can be experienced as a more familiar phenomenon.
Moreover, the heat insulating member 11d formed from noncombustible fibers has a structure with relatively good air permeability. For this reason, when the inner surface 20s of the test portion heat insulating member 20d is exposed, the liquid impregnated in the test portion heat insulating member 20d can be easily brought into contact with air. Therefore, the spontaneous ignition phenomenon can be generated more reliably, so that the operator can experience the spontaneous ignition phenomenon more reliably.

なお、試験部20の他端を持ち上げて、再び試験部断熱部材20dの内面20sを露出させるタイミングは、事前の試験等によって加熱開始から自然発火が確実に発生する状況(例えば、試験部20の液体の急激な温度上昇や発煙等が確実に生じる状況)となるまでの時間を測定しておき、その時間によって決定してもよい。
しかし、実験環境などによって自然発火が確実に発生する状況となるまでの時間は変化することが考えられ、試験部断熱部材20dの内面20sを露出させても自然発火が生じない可能性がある。
The timing at which the other end of the test unit 20 is lifted and the inner surface 20s of the test unit heat insulating member 20d is exposed again is a situation where spontaneous ignition occurs reliably from the start of heating by a prior test or the like (for example, the test unit 20 It is possible to measure the time until a sudden rise in temperature of the liquid or a situation in which smoke or the like is surely generated) and to determine the time.
However, it is conceivable that the time required for spontaneous ignition to occur reliably varies depending on the experimental environment, and spontaneous ignition may not occur even if the inner surface 20s of the test section heat insulating member 20d is exposed.

かかる問題を防ぐ上では、温度計測手段、例えば、温度センサ等を試験部20内、つまり、試験部断熱部材20d内に配置しておくことが好ましい。かかる温度センサを、測定された温度を表示する表示装置等に接続しておけば、表示される温度に基づいて、試験部断熱部材20dの内面20sを露出させるタイミングを決定することができる。つまり、試験部断熱部材20d内の液体が自然発火し得る温度となったタイミングで試験部断熱部材20dの内面20sを露出させることができるから、作業者に、自然発火現象を確実に体感させることができる。   In order to prevent such a problem, it is preferable to arrange a temperature measuring means, for example, a temperature sensor or the like in the test unit 20, that is, in the test unit heat insulating member 20d. If such a temperature sensor is connected to a display device or the like that displays the measured temperature, the timing for exposing the inner surface 20s of the test portion heat insulating member 20d can be determined based on the displayed temperature. In other words, since the inner surface 20s of the test part heat insulation member 20d can be exposed at a timing when the liquid in the test part heat insulation member 20d reaches a temperature at which it can spontaneously ignite, it is possible for the operator to experience the spontaneous ignition phenomenon with certainty Can do.

(その他)
なお、上記例では、加熱源12が、外筒13とその内部に設けられた電気ヒータ14の場合を説明したが、加熱源12の構造は上記のごとき構造に限定されない。
例えば、加熱源12を、金属製の平板と、その平板を裏面から加熱する加熱手段によって構成してもよい。この場合でも、平板の表面を、上述したような断熱材(断熱部材と遮断部材)によって覆い、断熱材の一部に、平板の表面に接近離間可能な試験部を設ければ、上述した例と同様に体感実験を実施することは可能である。
しかし、上記のごとく、加熱源12を、外筒13とその外筒13を内部から加熱する加熱手段とによって構成するとすれば、装置の構造が、実際のプラントの配管に近い状態とすることができる。すると、加熱源12を、平板とその平板を加熱する加熱手段によって構成した場合に比べて、作業者に実際のプラントをイメージさせることができ、作業者に、自然発火現象をより身近な現象として体感させることができるという利点が得られる。
(Other)
In the above example, the case where the heating source 12 is the outer cylinder 13 and the electric heater 14 provided therein is described, but the structure of the heating source 12 is not limited to the above-described structure.
For example, the heating source 12 may be configured by a metal flat plate and a heating unit that heats the flat plate from the back surface. Even in this case, if the surface of the flat plate is covered with the heat insulating material (the heat insulating member and the blocking member) as described above, and a test part capable of approaching and separating from the surface of the flat plate is provided in a part of the heat insulating material, the above-described example It is possible to carry out a bodily sensation experiment as well.
However, as described above, if the heating source 12 is constituted by the outer cylinder 13 and heating means for heating the outer cylinder 13 from the inside, the structure of the apparatus may be close to the actual plant piping. it can. Then, compared with the case where the heating source 12 is configured by a flat plate and heating means for heating the flat plate, the worker can be made to imagine an actual plant, and the spontaneous ignition phenomenon can be made more familiar to the worker. The advantage that it can be experienced is obtained.

本発明の自然発火現象体感装置を用いて、実際に自然発火実験を行った。
実験では、実際の化学工場において使用されている自然発火性を有する物質を試験部の断熱部材の内面に付着させた後、外筒の外面に断熱部材の内面を密着させて加熱し、その後、所定の温度となったときに断熱部材の内面を露出させて、その際に生じる現象を確認した。
A spontaneous ignition experiment was actually conducted using the spontaneous ignition phenomenon sensation apparatus of the present invention.
In the experiment, after attaching a pyrophoric substance used in an actual chemical factory to the inner surface of the heat insulating member of the test part, the inner surface of the heat insulating member was adhered to the outer surface of the outer cylinder and heated, and then When the temperature reached a predetermined temperature, the inner surface of the heat insulating member was exposed, and a phenomenon occurring at that time was confirmed.

まず、バーレルサーム400(芳香族系有機合成熱媒体油)を試験部の断熱部材(ニチアス(株)製、型式4516-N700)に含浸させて外筒に設置した。この状態から外筒を250℃になるまで加熱して、断熱部材の温度が175℃になった段階で、断熱部材の内面を露出させて、バーレルサーム400を空気と接触させた。すると、断熱部材の温度が瞬間的に23℃急激に上昇した。   First, Barrel Therm 400 (aromatic organic synthetic heat medium oil) was impregnated in a heat insulating member (Model 5156-N700, manufactured by Nichias Corp.) and installed in an outer cylinder. In this state, the outer cylinder was heated to 250 ° C., and when the temperature of the heat insulating member reached 175 ° C., the inner surface of the heat insulating member was exposed and the barrel thermo 400 was brought into contact with air. Then, the temperature of the heat insulating member rose instantaneously at 23 ° C.

また、洗浄剤として使用されているステアリン酸を溶解して含浸させた断熱材を外筒に設置し、外筒を260℃になるまで加熱した。この場合にも、断熱部材の温度が210℃になった段階で断熱部材の内面を露出させて、ステアリン酸を空気と接触させたところ、断熱部材の温度が瞬間的に15℃急激に上昇した。また、温度上昇とともに、断熱部材が徐々に焦げていく様子も確認できた。   A heat insulating material dissolved and impregnated with stearic acid used as a cleaning agent was placed on the outer cylinder, and the outer cylinder was heated to 260 ° C. Also in this case, when the temperature of the heat insulating member reached 210 ° C., the inner surface of the heat insulating member was exposed, and when stearic acid was brought into contact with air, the temperature of the heat insulating member increased instantaneously by 15 ° C. . It was also confirmed that the heat insulating member gradually burned as the temperature rose.

以上の結果より、本発明の自然発火現象体感装置を用いれば、実際のプラントで生じる可能性のある自発火現象を体感させることができる。   From the above results, by using the spontaneous ignition phenomenon sensation apparatus of the present invention, it is possible to experience the spontaneous ignition phenomenon that may occur in an actual plant.

本発明の自然発火現象体感装置は、化学工場や食品工場等において使用される可燃性物質の自然発火現象を安全に体感させる体感実験装置として適している。   The spontaneous ignition phenomenon sensation apparatus of the present invention is suitable as a sensation experiment apparatus for safely experiencing the spontaneous ignition phenomenon of a combustible substance used in a chemical factory or a food factory.

10 自然発火現象体感装置
11 断熱材
11c 遮断部材
11d 断熱部材
12 加熱源
13 外筒
14 ヒータ
15 断熱材
20 試験部
20c 試験部遮断部材
20d 試験部断熱部材
20s 試験部断熱部材の内面
DESCRIPTION OF SYMBOLS 10 Pyrophoric sensation apparatus 11 Heat insulation material 11c Blocking member 11d Heat insulation member 12 Heat source 13 Outer cylinder 14 Heater 15 Heat insulation material 20 Test part 20c Test part cutoff member 20d Test part heat insulation member 20s Inner surface of test part heat insulation member

Claims (4)

自然発火性を有する物質の自然発火現象を体感し得る装置であって、
加熱源と、
該加熱源を覆うように設けられた断熱部材と、該断熱部材を外気から遮断するように該断熱部材の外面を覆うように設けられた遮断部材と、を有する断熱材と、を備えており、
前記断熱材は、
前記物質を前記断熱部材に含浸させるための試験部を備えており、
該試験部の断熱部材における加熱源側の面が、前記加熱源に対して接近離間可能であって、
該試験部の断熱部材における加熱源側の面が前記加熱源に密着するように該試験部を配置させると、該試験部の断熱部材における加熱源側の面が外気から遮断され、該試験部の断熱部材における加熱源側の面を前記加熱源から離間させると、該試験部の断熱部材における加熱源側の面が外気に露出されるように形成されている
ことを特徴とする自然発火現象体感装置。
A device capable of experiencing the spontaneous ignition phenomenon of a substance having spontaneous ignition,
A heating source;
A heat insulating member provided to cover the heat source, and a heat insulating material provided to cover the outer surface of the heat insulating member so as to block the heat insulating member from the outside air. ,
The heat insulating material is
A test part for impregnating the heat insulating member with the substance;
The surface on the heat source side in the heat insulating member of the test part can be approached and separated from the heat source,
When the test unit is arranged so that the heat source side surface of the heat insulating member of the test unit is in close contact with the heat source, the heat source side surface of the heat insulating member of the test unit is shielded from the outside air, and the test unit The spontaneous ignition phenomenon is characterized in that when the surface on the heat source side of the heat insulating member is separated from the heat source, the surface on the heat source side of the heat insulating member of the test section is exposed to the outside air Experience device.
前記加熱源は、
筒状に形成された金属製の外筒と、該外筒に対して熱を供給する加熱手段とを備えている
ことを特徴とする請求項1記載の自然発火現象体感装置。
The heating source is
2. The spontaneous ignition phenomenon sensation apparatus according to claim 1, further comprising: a metal outer cylinder formed in a cylindrical shape; and heating means for supplying heat to the outer cylinder.
前記断熱材の断熱部材は、不燃性の繊維から形成されたものである
ことを特徴とする請求項1または2記載の自然発火現象体感装置。
The spontaneous ignition phenomenon sensation apparatus according to claim 1, wherein the heat insulating member of the heat insulating material is formed of non-combustible fiber.
前記試験部内の温度を測定する温度計測手段を備えている
ことを特徴とする請求項1、2または3記載の自然発火現象体感装置。
The spontaneous ignition phenomenon sensation apparatus according to claim 1, 2, or 3, further comprising temperature measuring means for measuring the temperature in the test section.
JP2010233699A 2010-10-18 2010-10-18 Spontaneous combustion phenomenon bodily-feeling apparatus Pending JP2012088112A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315026A (en) * 2017-07-19 2017-11-03 上海市计量测试技术研究院 Self-ignition point test instrument and its application method
CN108872303A (en) * 2018-06-07 2018-11-23 广东工业大学 A kind of spontaneous combustion curve detection system of self-heating substance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315026A (en) * 2017-07-19 2017-11-03 上海市计量测试技术研究院 Self-ignition point test instrument and its application method
CN107315026B (en) * 2017-07-19 2023-06-20 上海市计量测试技术研究院 Self-ignition point tester and use method thereof
CN108872303A (en) * 2018-06-07 2018-11-23 广东工业大学 A kind of spontaneous combustion curve detection system of self-heating substance
CN108872303B (en) * 2018-06-07 2023-09-01 广东工业大学 Spontaneous combustion curve detecting system of self-heating substance

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